Adjustable reamer grinding clearance gauge



Jan. 3, 1933. J. C.

FRIEND l;893,404

ADJUSTABLE REAMER GRINDING CLEARANCE GAUGE Filed Dec. 2, 1951 6 25 Ilium,0

i 62 uggum Q gwwmtoz Jbse h 6'. Friend Patented Jan. 3, 1933 v; UNITEDST TES- JOSEPHI'C.FRIFND, O13 ASI-TTABULA, VOI-IIO ADJUSTABLEREAMERYGRINDING CLEARANCE GAUGE Application filed December 2 1931 Seria11io '578 ,5 8 8.

My invention relates to an adjustable reamer grinding clearance gaugedesigned primarily for the purpose of adjusting the cutting clearance ofall types of reamers which are about to be ground on the reamer grinder,but it is to be understood that a gauge, in accordance'with my inventionmay be employed in any connection for which itis found applicable. V

The essential objects of my invention are to'provide, a gauge of suchclass capable of maximum accuracy for producing a unlforrn cutting'edgeand clearance on tools of the reamer type; for adjusting the desiredcutting clearance on straight, spiral, expanding or solid reamers;capable of being employed to adjust the cutting clearance on cylinderboring machine cutting headsand for other reaming and cutting tools;-insur-- ing for accurate adjustment for various sizes of reamersbefore-or after the reamer is inserted for grinding; to insure properadjusta ment to prevent damage-to the tool; requir-i ing no skill inmaking the desired adjust- Y j g V p the passagefl and the portions 7and 8 of the f i ments; and to attain theseends in a strong, durable,compact, thoroughly efiicient, expeditiously adjusted, convenientlyoperated, readily installed and inexpensive structure;

To the above ends essentially and others which may hereinafter appear,my invention consistsof such parts and such combination of partswhiclrfall within the scope ofthe invention as claimed.

In the drawing: Figure 1 is a top plan view of a accordance with myinvention;

Figure 2 is a longitudinal sectional view thereof. Figure 8 is a sectionon line 3-3 Figure 2. I Figure 4 is a section on line 4-4 F igure 2.

gauge in Referring to the drawing, 1 denotes a supmeans, not shown." Oneendof the post 1 has a reduced peripherally threaded extension 2,

The gauge includes a carrier 3, preferably" of polygonal cross sectionand which is formed fora portion of itslength with a pasbar 12 together.

sage 4 of square outline extending from its outer end 5 to a pointbetween its transverse median and its inner end 6. The carrierB is alsoformed with a lengthwiseextending opening having'a tapered portion 7 anda portion 8'ofuniform diameter, the former merging into the outer endofpassage 4 and the latter extended from end 6 to said tapered portion 7.The carrier 3 in proximity to end 5 is formed with a peripheral socket 9having'its wall threaded and engaging'with; the latter is the'threadedextension 2for coupling the "carrier 3 and post 1 together. Between theend 5 of carrier 3 and the transverse median of the latter there isprovided a transverseopeninglO communicating with passage 4 and havingathreaded wall. The

opening 10 preferably isin that side of the carrier opposite the side inwhich is arranged socket 9. The carrier 3 in'proximity to end 6 isformed with a transverse opening 11 comlnunicating'with portion 8 of thelengthwise opening and having'a threaded wall.

Adjustably mounted in the carrier 3 within part 14 of circular crosssection having pe- 8 ripheral' threads; The part-13 has a scale ofgraduations on one sideyas at 13, extends from end 5 and has its outerend formed with a lengthwise socket 15 having a threaded wall. The part14 extends from end 6. I y

A r'eamerhead 16 has a reduced rearward- 1y extending peripherallythreaded 'exten sion- 17-which'threadedly engages with the wall ofsocket 15for coupling the head and reamer blade 18.

Mounted upon and threadedly engaging with 'part'l l' of bar 12, as wellas extending into the carrier from the end6 is an adjust- Eng nut 19 ofthe sleeve type. The nut com- 95 prises an outer part and an inner part20, 21 respectively, the former being of greater diameter than thelatterto provide the nut 19 with an annular peripheral shoulder 22; The

part 21 extendsinto the; carrier 3 and heme 100 i The head 16"carries-the peripheral groove 23 of V-shape cross section. The shoulder22 opposes end 6 of carrier 3.

Extending through opening 10, as well as threadedly engaging with thewall and binding against one side of part 13 of bar 12 for locking thelatter in adjusted position is a locking screw 24 formed with anenlarged head 25 providing'a finger or thumb grip to facilitate theadjusting of the screw to and from binding or looking position withrespect to bar 12. Extending through, as well as threadedly engagingwith the wall of opening 11 is a coupling screw 26 having a pointed end27 permanently seating in groove 23, the latter in connection with theend 27 of screw 26 revolubly couples nut 19 to carrier 3. A lock nut 26is provided-for screw 26.

Secured within the peripheryv of carrier 3 and extended from the end 5of the latter is an indicating pointer 28 whiohassociates with thegraduations 13 for determining the adjusted position of the gauge bar12.

In order to make an adjustment of the gauge, the locking screw 24 isloosened by hand, thereby releasing the gauge bar 12, then by revolvingthe nut 19 in a clockwise or anticlockwise direction the bar 12 will beshifted forward or backward through the carrier 3 to whatever adjustmentis desired according to the size of the reamer or tool to be ground. theadjustment being indicated-by the pointer on the scale 13'. After thedesired adjustment is reached, the locking screw 24 can be tightenedvery readily by hand without disturbing the adjustment.

What I claim is 1. A gauge for the purpose set forth comprising, anelongated hollow carrier having an outer end and an open inner end, anadjustable gauge bar slidably mounted in the carrier and having one sideprovided with graduations, said bar projecting from the ends of thecarrier, said gauge bar being,

formed with an outer portion and an inner part, said inner part beingperipherally threaded. said outer part being formed at its outer'endwithmeans for coupling a'tool head therewith, an indicating pointersecured to and extended from the outer end of the carrier and associatedwith said scale, revoluble means extending into the inner end of thecarrier, revolubly coupled to the latter and threadedly en gaging withthe inner part of said bar for adjusting the latter, and lock- Lng meansconnected to the carrier for said 2. A gauge for the purpose set forthcomprising, an elongated hollow carrier having an outer end and an openinner end. an adjustable gauge bar slidably mounted in the carrier andhaving one side provided with graduations, said bar projecting from theends of the carrier, said gauge bar being formed with an outer part andan inner part,

0 said inner part being peripherally threaded,

said outer part being formed at its outer end with means for coupling 'atool head therewith, an indicating pointer secured to and extended fromthe outer end of the carrier and associated with said scale, revolublemeans extending into the inner end of the carrier and threadedlyengaging with said inner part of said bar for adjusting thelatter, saidrevoluble means having a peripheral groove. means connected to thecarrier and extending into said groove for revolubly connecting said baradjusting means to the garrier, and releasable locking means for the ar.V

3. A'gaugefor the purpose set forth comprising, an elongated hollowcarrier having an outer end and an open inner end, anadjustable gaugebar slidably mounted in the carrier and having one side provided withgraduations, said bar projecting from the ends of the carrier, saidgauge bar being 7 formed with an outer part and an inner part,

said inner part being peripherally threaded,

extending into the inner end of the carrier,

revolubly coupled to thelatter and threadedly engaging with the innerpart of said bar-for adjusting the latter, locking means connected tothe carrier for said bar, and a post connected to said carrier inproximity to one end thereof. i

4. A gauge for the purpose set forth comprising, an elongated hollowcarrier having an outer end and an open inner end, an adjustable gaugebar slidably mounted in the carrier and having one side provided withgraduations, said bar projecting from the ends of the carrier, saidgauge bar being formed with an outer part and aninner part, said innerpart being peripherally threaded, said outer part being formed at itsouter end with means for coupling a tool head therewith, anindicatingpointer secured to and extended from the outer end of thecarrier and associated for the bar, and a post connected to said carrierin proximity to one end thereof.

5. A gauge for the purpose set forth comprising, an elongated hollowcarrier having an outer end and anopen inner end, an adjustable gaugebar slidably mounted in the carrier and having one side provided wlthgraduations, said bar pro ecting fromthe ends of the carrier, said gaugebar being,v

formed with an outer part and an inner part, said inner part beingperipherally threaded, said outer part being formed at its outer endwith means for coupling a tool head therewith, an indicating pointersecured to and ex tended from the outer end of the carrier andassociated with said scale, revoluble means extending into the inner endof the carrier, revolubly coupled to the latter and threadedly engagingwith the inner part of said bar for adjusting the latter, locking meansconnected to the carrier for said bar, said inner part being of circularcross section, said bar having its outer part of square cross section,and said bar being of greater length than the carrier.

6. A gauge for the purpose set forth comprising, an elongated hollowcarrier having an outer end and an open inner end, an adjustable gaugebar slidably mounted in the carrier and having one side provided withgraduations, said bar projecting from the ends of the carrier, saidgauge bar being formed with an outer part and an inner part, said innerpart being peripherally threaded, said outer part being formed at itsouter end with means for coupling a tool head therewith, an indicatingpointer secured to and extended from the outer end of the carrier andassociated with said scale, revoluble means extending into the inner endof the carrier and threadedly engaging with said inner part of said barfor adjusting the latter, said revoluble means having a peripheralgroove, means connected to the carrier and extending into said groovefor revolubly connecting said bar adjusting means to the carrier,releasable locking means for the bar, said inner part being of circularcross section, said bar having its outer part of square cross section,and

said bar being of greater length than the carrier.

7. A gauge for the purpose set forth comprising, an elongated hollowcarrier having an outer end and an open inner end, an adjustable gaugebar slidably mounted in the carrier and having one side provided withgraduations, said bar projecting from the ends of the carrier, saidgauge bar being formed with an outer part and an inner part, said innerpart being peripherally threaded, said outer part being formed at itsouter end with means for coupling a tool head therewith, an indicatingpointer secured to and extended from the outer end of the carrier andassociated with said scale, revoluble means extending into the inner endof the carrier, revolubly coupled to the latter and threadedly engagingwith the inner part of said bar for adjusting the latter, locking meansconnected to the carrier for said bar, a post connected to said carrierin proximity to one end thereof, said inner part being of circular crosssection, said bar having its outer part of squarezcrosssection, andsaidbar being of: 2

greater lengththan: the carrieriw BJA gauge for the'purpose set.forthicom: 5

prisingp; an elongated hollow carrier having.

anaouter. end: andianopeninner end, an ad-v justable gaugeg ban slidablymounted in the carrierandihaving one side provided with a graduations,said bar projecting-I from the ends of: the: carrier, rsaid' vgauge: barbeing 17 formed with an outerppart, and an=innerpart,;

said innerpartbeing peripherally threaded,

said outer part being formed at its outerwend- 1:

with'meansfor couplingfa tool head therewith, an indicating'pointersecured, to and extended from the outer end of the carrier andassociated with said scale, revoluble means extending into the inner endof the carrier and threadedly engaging with said inner part of said barfor adjusting the latter, said revoluble means having aperipheral'circular cross section, saidbar having its outer part of square crosssection, and said bar being of greater length than the carrier.

9. A gauge for the purpose set forth comprising, an elongated hollowcarrier having an outer end and an open inner end, an adjustable gaugebar slidably mounted in the carrier and having one side provided withgraduations, said bar projecting from the ends of the. carrier, saidgauge bar being formed with an outer part and an inner part, said innerpart being peripherally threaded, said outer part being formed at itsouter end with means for coupling a tool head therewith, an indicatingpointer secured to and extended from the outer end of the carrier andassociated with said scale, revoluble means extending into the inner endof the carrier, revolubly coupled to the latter and threadedly engagingwith the inner part of said bar for adjusting the latter, locking meansconnected to the carrier for said bar, and said revoluble means having aperipheral shoulder opposing the inner end of the carrier.

10. A gauge for the purpose set forth com prising, an elongated hollowcarrier having an outer end and an open inner end, an adjustable gaugebar slidably'mounted in the carrier and having one side provided withgraduations, said bar projecting from the ends of the carrier, saidgauge bar being formed with an outer part and an inner part, said innerpart being peripherally threaded, said outer part being formed at itsouter end with means for coupling a tool head there.- with, anindicating pointer secured to and extended from the outer end of thecarrier and associated with said scale, revoluble means extending intothe inner end of the carrier and threadedly engaging with said innerpart of said bar for adjusting the latter, said revoluble means having aperipheral groove, means connected to the carrier and extending intosaid groove for revolubly connecting said bar adjusting means to thecarrier, releasable locking means for the bar,' and said revoluble meanshaving a peripheral shoulder opposing theinner end of the carrier.

In testimony whereof, I edit: my signature hereto.

JOSEPH o. FRIEND.

